Had the 9's awhile now and feel like I know more about their contribution in my system. First up, agree that having the component near enough to the wall socket so you can coil the wire to create pressure on the socket or having a 2m cord to give you that option if not will secure the connection tightly.
These plug directly into the bottom rear of my speakers (active speakers) about 20" off the ground so the weight of the cable pulls the plug downward and away from the socket. Everything worked fine but this made me nervous. So, I built a wee shelf under the rear of each speaker, sorta like a tongue blade, and put some dense felt blocks on top of it to elevate the plugs and hold them at right angles. Problem solved.
I had said earlier than on symphonic music, opera, actually, that the players did their thing seemingly more effortlessly. That has remained. The cymbal splash on the opening of track of Kind of Blue is more free, less constricted, and with finer filagree to the information. The longer I have listened, it seems as tho bass (deep bass) in general is fuller. I can't say that it is more extended, it just has a more natural feel and quality about it. I guess there is more or easier dynamic life is why.
This makes me happy.
Elizabeth, if you see this, I couldn't thank you for your PM reply cause I keep getting a window that says something is amiss and has to close (?). So, thanks for your reply.